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  1. 1
    An improved positivity preserving odd degree-n Said-Ball boundary curves on rectangular grid using partial differential equation

    An improved positivity preserving odd degree-n Said-Ball boundary curves on rectangular grid using partial differential equation by Kherd, Ahmed, Saaban, Azizan, Man, Noraziah

    Published 2016
    “…This paper discusses the sufficient conditions for positivity preserving odd degree-n Said-Ball boundary curves defined on a rectangular grid.We derive a sufficient condition on boundary curves of rectangular Said-Ball patches where the lower bound ordinates are adjusted independently.To construct the boundary curves for each rectangular patch, the Said-Ball polynomial solution of fourth order PDE will be considered where its coefficients can be calculated using edge Said-Ball ordinates which fulfill the positivity preserving conditions.Graphical examples are presented using well-known test functions.…”
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  2. 2
    Maximum; Likelihood Estimation For The Non-Separable Spatial Unilateral Autoregressive Model.

    Maximum; Likelihood Estimation For The Non-Separable Spatial Unilateral Autoregressive Model. by Awang, Norhashidah, Shitan, Mahendran

    Published 2008
    “…We show that this procedure is practical and easy to be implemented We illustrate the procedure by fitting the AR(l, J) model to two set of data on the regular rectangular grid.…”
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  3. 3
    Surface Interpolation Using Partial Differentiation Equation with Positivity Preserving Cubic Bezier Curves Boundary Condition

    Surface Interpolation Using Partial Differentiation Equation with Positivity Preserving Cubic Bezier Curves Boundary Condition by ABDUL KARIM, SAMSUL ARIFFIN

    Published 2012
    “…This paper proposed the sufficient conditions for positivity preserving cubic boundary curves defined on rectangular grid using a polynomial solution of fourth order linear PDEs in order to improve the positivity preserving of the interpolating surface. …”
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  4. 4
    Performance of the triangulation-based methods Of positivity-preserving scattered data interpolation

    Performance of the triangulation-based methods Of positivity-preserving scattered data interpolation by Saaban, Azizan, Mt Piah, Abd Rahni, Abd Majid, Ahmad

    Published 2011
    “…The absolute maximum and mean errors are computed using 33×33 evaluation points on a uniform rectangular grid.…”
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  5. 5
    Surface interpolation using partial differentiation equation with positivity preserving cubic Said-Ball curves boundary condition

    Surface interpolation using partial differentiation equation with positivity preserving cubic Said-Ball curves boundary condition by Kherd, Ahmed, Saaban, Azizan, Man, Noraziah

    Published 2013
    “…This paper proposes the sufficient conditions for positivity preserving cubic boundary curves defined on rectangular grid using polynomial solution of fourth order linear PDEs in order to improve the positivity preserving of the interpolating surface. …”
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  6. 6
    Surface interpolation using partial differentiation equation with positivity preserving cubic said-Ball curves boundary condition

    Surface interpolation using partial differentiation equation with positivity preserving cubic said-Ball curves boundary condition by Kherd, Ahmed, Saaban, Azizan, Man, Noraziah

    Published 2014
    “…In this paper, the sufficient condition for the positive preservation of boundary curves for each edges of bicubic rectangular Said-Ball patches will be discussed.With the use of polynomial solution of fourth order linear PDEs, these curves are defined on rectangular grid for the purpose of enhancing the positivity preservation of the interpolating surface. …”
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  7. 7
    Spatial variability of pineapple yields on tropical peat.

    Spatial variability of pineapple yields on tropical peat. by Balasundram, Siva Kumar, Mohd Hanif, Ahmad Husni, Ahmad, Osumanu Haruna

    Published 2008
    “…In situ yield measurements were recorded based on 0.6 × 25-m rectangular grids. A total of 60 geo-referenced yield records were obtained. …”
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  8. 8
    Physico-chemical properties, carbon dioxide emissions and carbon stock in peat soil used for turmeric cultivation at Kuala Langat Selatan, Selangor, Malaysia

    Physico-chemical properties, carbon dioxide emissions and carbon stock in peat soil used for turmeric cultivation at Kuala Langat Selatan, Selangor, Malaysia by Wan Mohd. Razi, Sahibin Sahibini Abd Rahim, L. Tukimat, A.R. Zulfahmi, M. S. Mohd. Nizam, T. Fredolin, T. C. Teng

    Published 2019
    “…A total of 30 carbon dioxide emission sampling points in rectangular grid arrangement was prepared in a survey plot of 1 hectare. …”
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